1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.systemui.statusbar; 18 19 import android.animation.Animator; 20 import android.animation.AnimatorListenerAdapter; 21 import android.animation.ValueAnimator; 22 import android.util.ArrayMap; 23 import android.util.ArraySet; 24 import android.view.View; 25 import android.view.ViewGroup; 26 import android.view.animation.Interpolator; 27 28 import com.android.systemui.Interpolators; 29 import com.android.systemui.R; 30 import com.android.systemui.statusbar.notification.TransformState; 31 import com.android.systemui.statusbar.stack.StackStateAnimator; 32 33 import java.util.Stack; 34 35 /** 36 * A view that can be transformed to and from. 37 */ 38 public class ViewTransformationHelper implements TransformableView { 39 40 private static final int TAG_CONTAINS_TRANSFORMED_VIEW = R.id.contains_transformed_view; 41 42 private ArrayMap<Integer, View> mTransformedViews = new ArrayMap<>(); 43 private ArrayMap<Integer, CustomTransformation> mCustomTransformations = new ArrayMap<>(); 44 private ValueAnimator mViewTransformationAnimation; 45 46 public void addTransformedView(int key, View transformedView) { 47 mTransformedViews.put(key, transformedView); 48 } 49 50 public void reset() { 51 mTransformedViews.clear(); 52 } 53 54 public void setCustomTransformation(CustomTransformation transformation, int viewType) { 55 mCustomTransformations.put(viewType, transformation); 56 } 57 58 @Override 59 public TransformState getCurrentState(int fadingView) { 60 View view = mTransformedViews.get(fadingView); 61 if (view != null && view.getVisibility() != View.GONE) { 62 return TransformState.createFrom(view); 63 } 64 return null; 65 } 66 67 @Override 68 public void transformTo(final TransformableView notification, final Runnable endRunnable) { 69 if (mViewTransformationAnimation != null) { 70 mViewTransformationAnimation.cancel(); 71 } 72 mViewTransformationAnimation = ValueAnimator.ofFloat(0.0f, 1.0f); 73 mViewTransformationAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 74 @Override 75 public void onAnimationUpdate(ValueAnimator animation) { 76 transformTo(notification, animation.getAnimatedFraction()); 77 } 78 }); 79 mViewTransformationAnimation.setInterpolator(Interpolators.LINEAR); 80 mViewTransformationAnimation.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD); 81 mViewTransformationAnimation.addListener(new AnimatorListenerAdapter() { 82 public boolean mCancelled; 83 84 @Override 85 public void onAnimationEnd(Animator animation) { 86 if (!mCancelled) { 87 if (endRunnable != null) { 88 endRunnable.run(); 89 } 90 setVisible(false); 91 } else { 92 abortTransformations(); 93 } 94 } 95 96 @Override 97 public void onAnimationCancel(Animator animation) { 98 mCancelled = true; 99 } 100 }); 101 mViewTransformationAnimation.start(); 102 } 103 104 @Override 105 public void transformTo(TransformableView notification, float transformationAmount) { 106 for (Integer viewType : mTransformedViews.keySet()) { 107 TransformState ownState = getCurrentState(viewType); 108 if (ownState != null) { 109 CustomTransformation customTransformation = mCustomTransformations.get(viewType); 110 if (customTransformation != null && customTransformation.transformTo( 111 ownState, notification, transformationAmount)) { 112 ownState.recycle(); 113 continue; 114 } 115 TransformState otherState = notification.getCurrentState(viewType); 116 if (otherState != null) { 117 ownState.transformViewTo(otherState, transformationAmount); 118 otherState.recycle(); 119 } else { 120 ownState.disappear(transformationAmount, notification); 121 } 122 ownState.recycle(); 123 } 124 } 125 } 126 127 @Override 128 public void transformFrom(final TransformableView notification) { 129 if (mViewTransformationAnimation != null) { 130 mViewTransformationAnimation.cancel(); 131 } 132 mViewTransformationAnimation = ValueAnimator.ofFloat(0.0f, 1.0f); 133 mViewTransformationAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 134 @Override 135 public void onAnimationUpdate(ValueAnimator animation) { 136 transformFrom(notification, animation.getAnimatedFraction()); 137 } 138 }); 139 mViewTransformationAnimation.addListener(new AnimatorListenerAdapter() { 140 public boolean mCancelled; 141 142 @Override 143 public void onAnimationEnd(Animator animation) { 144 if (!mCancelled) { 145 setVisible(true); 146 } else { 147 abortTransformations(); 148 } 149 } 150 151 @Override 152 public void onAnimationCancel(Animator animation) { 153 mCancelled = true; 154 } 155 }); 156 mViewTransformationAnimation.setInterpolator(Interpolators.LINEAR); 157 mViewTransformationAnimation.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD); 158 mViewTransformationAnimation.start(); 159 } 160 161 @Override 162 public void transformFrom(TransformableView notification, float transformationAmount) { 163 for (Integer viewType : mTransformedViews.keySet()) { 164 TransformState ownState = getCurrentState(viewType); 165 if (ownState != null) { 166 CustomTransformation customTransformation = mCustomTransformations.get(viewType); 167 if (customTransformation != null && customTransformation.transformFrom( 168 ownState, notification, transformationAmount)) { 169 ownState.recycle(); 170 continue; 171 } 172 TransformState otherState = notification.getCurrentState(viewType); 173 if (otherState != null) { 174 ownState.transformViewFrom(otherState, transformationAmount); 175 otherState.recycle(); 176 } else { 177 ownState.appear(transformationAmount, notification); 178 } 179 ownState.recycle(); 180 } 181 } 182 } 183 184 @Override 185 public void setVisible(boolean visible) { 186 if (mViewTransformationAnimation != null) { 187 mViewTransformationAnimation.cancel(); 188 } 189 for (Integer viewType : mTransformedViews.keySet()) { 190 TransformState ownState = getCurrentState(viewType); 191 if (ownState != null) { 192 ownState.setVisible(visible, false /* force */); 193 ownState.recycle(); 194 } 195 } 196 } 197 198 private void abortTransformations() { 199 for (Integer viewType : mTransformedViews.keySet()) { 200 TransformState ownState = getCurrentState(viewType); 201 if (ownState != null) { 202 ownState.abortTransformation(); 203 ownState.recycle(); 204 } 205 } 206 } 207 208 /** 209 * Add the remaining transformation views such that all views are being transformed correctly 210 * @param viewRoot the root below which all elements need to be transformed 211 */ 212 public void addRemainingTransformTypes(View viewRoot) { 213 // lets now tag the right views 214 int numValues = mTransformedViews.size(); 215 for (int i = 0; i < numValues; i++) { 216 View view = mTransformedViews.valueAt(i); 217 while (view != viewRoot.getParent()) { 218 view.setTag(TAG_CONTAINS_TRANSFORMED_VIEW, true); 219 view = (View) view.getParent(); 220 } 221 } 222 Stack<View> stack = new Stack<>(); 223 // Add the right views now 224 stack.push(viewRoot); 225 while (!stack.isEmpty()) { 226 View child = stack.pop(); 227 Boolean containsView = (Boolean) child.getTag(TAG_CONTAINS_TRANSFORMED_VIEW); 228 if (containsView == null) { 229 // This one is unhandled, let's add it to our list. 230 int id = child.getId(); 231 if (id != View.NO_ID) { 232 // We only fade views with an id 233 addTransformedView(id, child); 234 continue; 235 } 236 } 237 child.setTag(TAG_CONTAINS_TRANSFORMED_VIEW, null); 238 if (child instanceof ViewGroup && !mTransformedViews.containsValue(child)){ 239 ViewGroup group = (ViewGroup) child; 240 for (int i = 0; i < group.getChildCount(); i++) { 241 stack.push(group.getChildAt(i)); 242 } 243 } 244 } 245 } 246 247 public void resetTransformedView(View view) { 248 TransformState state = TransformState.createFrom(view); 249 state.setVisible(true /* visible */, true /* force */); 250 state.recycle(); 251 } 252 253 /** 254 * @return a set of all views are being transformed. 255 */ 256 public ArraySet<View> getAllTransformingViews() { 257 return new ArraySet<>(mTransformedViews.values()); 258 } 259 260 public static abstract class CustomTransformation { 261 /** 262 * Transform a state to the given view 263 * @param ownState the state to transform 264 * @param notification the view to transform to 265 * @param transformationAmount how much transformation should be done 266 * @return whether a custom transformation is performed 267 */ 268 public abstract boolean transformTo(TransformState ownState, 269 TransformableView notification, 270 float transformationAmount); 271 272 /** 273 * Transform to this state from the given view 274 * @param ownState the state to transform to 275 * @param notification the view to transform from 276 * @param transformationAmount how much transformation should be done 277 * @return whether a custom transformation is performed 278 */ 279 public abstract boolean transformFrom(TransformState ownState, 280 TransformableView notification, 281 float transformationAmount); 282 283 /** 284 * Perform a custom initialisation before transforming. 285 * 286 * @param ownState our own state 287 * @param otherState the other state 288 * @return whether a custom initialization is done 289 */ 290 public boolean initTransformation(TransformState ownState, 291 TransformState otherState) { 292 return false; 293 } 294 295 public boolean customTransformTarget(TransformState ownState, 296 TransformState otherState) { 297 return false; 298 } 299 300 /** 301 * Get a custom interpolator for this animation 302 * @param interpolationType the type of the interpolation, i.e TranslationX / TranslationY 303 * @param isFrom true if this transformation from the other view 304 */ 305 public Interpolator getCustomInterpolator(int interpolationType, boolean isFrom) { 306 return null; 307 } 308 } 309 } 310
